description: 1: Bluetooth version 4.1 2: distance within 10 meters 3: Support devices, computers, mobile phones, game consoles, tablets, etc. 4: Battery capacity 60MAH 5: Do not support one drag 2 function 6: Features, lightweight sports headphones 7: Call function, click to listen to long press to refuse to listen, click to hang up during the call, double click the last number to broadcast. 8: Support boot back function 9: Working status is about 2 to 3 hours 10: Support to play music, up and down songs, pause, volume addition and subtraction.  ★Color: (black) (red) (green) (blue)    Product specifications:  1, weight 45 grams  2: This Bluetooth noise reduction answering, support any key answering, effective connection with the smart phone, automatic matching connection program, charging to maintain the connection state. - Isolated voice, HD call: The sound frequency is recognized by the intelligent control chip, and the reverse signal is generated to filter out external noise (noise and wind) in the non-human frequency range. Enable HD calls in any noisy environment. Very beautiful sound quality gives you a different enjoyment!